Blitz by Tristan O'Tierney on 500px

Back in 2011, the The Pembina Institute published a report called, Building transit where we need it. And in it they quite clearly outlined the population densities that are needed to make various types of transit investment cost effective.

For subway they specify a minimum population density of 115 people per hectare and for light rail (LRT) they specify a minimum population density of 70 people per hectare. 

And the reason for this is because there’s a strong correlation between population density (i.e. land use) and transit ridership. The two go hand in hand and should not be decoupled. If population densities are too low (as they are, for example, along the Sheppard subway line here in Toronto), people don’t take transit. They drive.

Here’s a chart from the report showing the current and projected population densities for Toronto’s existing and proposed routes (keep in mind this is from 2011).

So what does this chart tell us?

• Subways don’t make a lot of sense in many parts of the city. LRT will do just fine.

• The Sheppard subway line is an under-utilized asset. Even by 2031 we’ll barely be reaching the requisite population densities.

• The Bloor-Danforth corridor could use more intensification.

• The Yonge-University-Spadina line is going to need to relief.
  

Unfortunately, transit decisions are often made based on politics instead of data. And that results in subways in places that don’t make a lot of sense. That’s unfortunate because it means less riders, less revenue, and more subsidies.

The other challenge with running subways through low density neighborhoods is that it then creates tension when the city and developers go to intensify those neighborhoods through transit-oriented development. (See #DensityCreep.)

But if we’re going to be fiscally irresponsible about where we deploy our transit capital, the least we could do is upzone the surrounding areas and impose minimum population densities. 

In fact, here’s what I think we should do: Land use should be bundled with the transit decision. 

Instead of asking where the subway station should go, we should be asking where the subway station should go and all the density needed to bring the area up to a certain minimum population density. And if that second criteria for whatever reason can’t be met, then we don’t build the line. 

I wonder if we framed the question in this way if it would change where subway lines get approved. What do you think?

CityLab published an article last week on multi-modal cities that caught my attention (because it used a picture of Toronto with about 3 or 4 streetcars stacked up along Queen Street). The premise of the article is that all of this car vs. transit debate is actually missing the bigger picture: our cities are multi-modal and we need to be planning for that.

That’s not to say that the shift away from cars isn’t a good thing. It is. But it’s not as simple as saying that, instead of driving, people should now only take transit. In today’s cities people walk, bike, take streetcars, take buses, take subways, take taxis, take private shuttles, use Uber, and, yes, they still drive.

From my own experience, this is absolutely how I get around Toronto today. I walk to the gym. I ride my bike whenever I’m going somewhere downtown. I take the subway to my office in midtown because it’s far and I would be too sweaty if I biked there. I use Uber and Hailo when I’m going out at night. And I drive when I need to go to the suburbs or leave the city.

But the key takeaway here is that we now have a much tougher challenge on our hands. When we were only optimizing for cars – however detrimental to our cities that was – we only had one mode to plan for. Now we have several. Some of which are public and some of which are private.

However we also have access to technologies that we didn’t have before. We are networked in ways that weren’t possible before and we’re at the dawn of many profound mobility changes, such as driverless cars. (Have you read about Tesla’s new Autopilot feature yet?)

So as I’ve said before, I really believe that we need to look at this, not as a war on the car, but as a war on inefficiency. The problem we are trying to solve relates to mobility: What’s the best way to move lots of people around dense urban regions? Stop focusing so much on the technologies and focus more on the people.

Image: Flickr

Last weekend a friend of mine sent me an article from The Economist talking about why trams, streetcars, and light rail are a waste of money. The argument is basically that steetcars are expensive, less efficient, and that – despite North America’s renewed interest in them – we should instead be spending our scarce public dollars on more buses.

Here’s a snippet from the article:

…but cash spent on streetcars displaces spending on other, more cost-effective forms of public transport like buses, which offer cheaper and more-efficient service but are considerably less sexy. The capital cost per mile of a streetcar is between $30m and $75m, while a rapid bus service costs anywhere between $3m and $30m, according to the American Public Transportation Association.

Now, there’s no question that buse routes are initially cheaper to implement. You don’t have track to build. But I don’t agree that the cost structure is quite that simple if you consider the number of people you need to move in your city. I struggle to see buses as a more efficient service.

The big difference between modern light rail and buses is capacity. Toronto’s new streetcars will move about 3 times as many people as your typical bus. So you’d need to triple the number of buses and triple the number of drivers – adding to your labor costs – if you want to have a chance at moving the same number of people. 

Streetcars are also electric, which means they run on a renewable energy source. We’re in the process of making this switch with private transport, so why go backwards when it comes to public transport? You can certainly run electric buses as well, but then you’re building overhead power lines and bringing up your initial costs.

I think the challenge is that when people think of light rail, they think of slow lumbering streetcars. I agree that many of these lines are inefficient and I’ve written about it. But there are a number of ways to implement light rail. And when done well it can efficiently move a lot of people for costs that are far less than a subway.

Image: Aecom